In the April 2007 edition of the American Welding Society Product Review section of the magazine, the Piranha II ad says:

“Perfect for nearly all welding applications this portable unit (under 7 lbs) is comapct and durable with no vibration. Grinds .040″ (1.0mm) through 1/8″ (3.2mm) tungsten at any angle from 15 to 45 degrees.”

Now we have nothing against the Piranha II. It’s a good, solid machine. We sell a lot of them. However, the Piranha II does not prepare 1/8″ (3.2mm) tungsten. It used to be manufactured to accommodate the 1/8″ diameter electrode, until it was discovered that the motor was not robust enough to handle that larger diameter– at least not for anything more than occasional use.